/*
 * @Description: 一元运算符
 * @Author: rendc
 * @Date: 2022-09-26 11:46:50
 * @LastEditors: rendc
 * @LastEditTime: 2022-09-26 11:49:28
 */
let a = 3;
console.log(a++); // 3
console.log(a); // 4
console.log(++a); // 5

let c = 1
let b = "2"
console.log(c + b);